Copi, I. M., & Cohen, C. (2019). Introduction to Logic (15th.). Routledge.
Chicagoスタイル(17版)引用形式Copi, Irving M., , Carl Cohen. Introduction to Logic. 15th. New York: Routledge, 2019.
MLA(9版)引用形式Copi, Irving M., , Carl Cohen. Introduction to Logic. 15th. Routledge, 2019.
警告: この引用は必ずしも正確ではありません.